Ingot-pusher



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" S. PORTER 8u J. HEMPHILL.

INGOT PUSHER.

Patented Apr. 1895.

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vINGroT PUSHBR. Y

Patented Apr. 2', 1895.

@Ntra SAMUEL FORTER AND JAMES HEMPHILL, OF ALLEGHENY COUNTY, PENNSYLVANIA.

INGOT-PUSHER.

SPECFIGATION forming part of Letters Patent No. 536,783, dated April 2, 1895;

Application filed February 12, 1895. Serial No. 538,075. (No model-l To @ZZ whom, t may concern;

Be it known that we, SAMUEL FORTER and JAMES HEMPHILL, citizens of the United- States, residing in the county of Allegheny and State of Pennsylvania, have invented or discovered newrand useful Improvements in Ingot-Pushers, of which the following is a specification.

In the accompanying drawings, which make part of this specification, Figure 1, is a front elevation of our apparatus with the lower part in vertical section. Fig. 2, is a section on line 2-2, of Fig. 1. Fig. 3, is a section on line 3-3, of Fig. 2. Fig. 4, is a plan of the supporting platform and Fig. 5, details of the slides connected with the bell crank lever of the parallel motion.

The purpose of our invention generally stated is to devise apparatus by which the adhesion between the ingots and their molds may be overcome by the combination of a vertical pusher and a yielding support for the ingots and molds; secondly, to devise parallel motion whereby the support may settle evenly although the pressure may not be applied u niformly thereon; thirdly, to devise mold lifting devices whereby the mold may be lifted clear of the ingot after the adhesion between them is broken, and then be lowered upon a car or to any desired position.

In the accompanying drawings, which make part of this specification, 2-2 are a series of hydraulic cylinders each provided with an inlet port 3 at the top and 4 at the bottom. 5-5, are long rams for said cylinders having removable shoes 6.

7, is a collar upon each ram.

8-8, are pendent links pivotally supported by slotted yokes 9. Passing through the slotted ends of said yokes are hanger rods 10, 10, adjustable by nuts 11, 11, in lugs 12, 12, cast on cylinder 2, 2.

Pins 13, 13, pass through lower ends of levers 14, 14, pivotally connected to pairs of levers 15, 15, pivoted to weight 16.

17, is a chain running over pulley 18 to pulpit not shown.

19, 19 are the Vingot molds, having ears 20, 20, and containing ingots 21, 21.

22, 22 are the ingot stools in pairs on cars 23, 23, supported on sectional rails 24, 24.

25, 25, are the rails of the main track.

platform, cars, molds and ingots.

Rails 24, 24, are secured to a platform built of side beams 26, 26 and distance castings, 27, 27 and center casting 28,.

The whole platform is above a pit, 29, allowing a fall for the platform of about fteen inches.

30, is a hydraulic cylinder supporting the platform, its plunger 40 being placed centrally beneath the center distance piece 28.

31, is a pipe running to the accumulator from cylinder 30, and preferably provided with three-way cock 32.

The pressure initially in cylinder 30 is designed to be sufficient to balance weight of To insure the rise and fall of the platform in a true horizontal plane, a parallel motion is provided consisting of the following parts, (best seen in Figs. 3 and 4:)

33, 33, are two pairs of bell crank levers with their lower forked ends pivotally fastened to connecting rods 34, 34. The bell cranks are pivoted at their elbows on shafts 35, 35, turning in brackets 36, 36, secured to the masonry. The upper ends of the bell cranks are pivoted to shafts 37, 37 having bearings in slides 38,-38. The slides 38, 38, move on keepers 39, 39, bolted to the under sides of beams 26, 26. The slides are also lipped so as to embrace the edges of the bottotti iianges of beams 26, 26.

The operation of the mechanism is as follows: The cars 23, 23 bearing the ingots and molds are run from the casting house to the pushers, the rams 5, 5, having previously been raised high enough so as not to strike the molds. The ingot molds are then centered by well known means directly beneath the rains and consequently upon the depressible platform. By opening ports 4, 4, the rams are permitted to drop by their own weight upon the top of the ingot. The links 8, 8, which tend normally to spread will be swung in against the sides of the molds by the pulpit boy pulling on chain '17, the loop of the links then being slightly below the under sides of the ears of the molds. Power is then applied to the first ram through port 3, and' the ingot communicating the downward pressure to the platform, the latter sinks upon the plunger 40 in cylinder 30. At the same instant as the stripping is to commence links 8,

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.e t scares S, get a bearing beneath the lugs of the mold and support the same while the stripping is in progress. Ordinarily a push of from two to twelve inches will free the ingot from its adhesion to the mold. When this is accomplished the ram is withdrawn, the platform slowly rising and loosely tclescoping the ingot back again in the mold. The remaining ingots on the cars may then be stripped in a like manner. After the ingots are stripped the loose molds are lifted from their contained ingots by raising the ram 5, until the collar7 comes in contact with yoke 9 and the lift of the ram then being continued the mold is raised clear of the top of the ingot. The cars containing the ingots are then withdrawn and an empty car run in their place. The molds are then lowered upon the empty cars and the links, which will then be a trifle below the ears of the molds as before stated are spread and become clear of the ears of the mold.

It will be observed by those practically skilled in the art that our construction is of the most simple character. @ne cylinder, instead of two as is usual, performs successively the double operations of ejectiug the ingot and lifting the mold. There is furthermore an entire absence of telescoping joints or flexible connections in the water pipes which are expensive and exceedingly difficult to keep` in repair.

The feature of the sinking platform or support for the iugots is peculiarly novel and desirable, and we desire to claim the combination of the same and our parallel motion independently of the peculiar use to which they are here put.

In the case of a severe sticker and in other manipulations of the platform, it may be desirable to use the three-way cock 32, to wholly remove the upward accumulator pressure or to reduce the same. The platform being virtually pivoted on ram t0 would not descend so satisfactorily without the use of our parallel motion devices, while the slides 3S, 38, take up all angularity of motion as "the platform moves. Obviously two or more cylinders could be used to support the platform and spaced at different points, so as to dispense with the necessity of a parallel motion mechanism, but the illustrated construction is preferable. The valve, 32, also might be omitted and the ram 40 kept under a constant accumulator pressure. The number of strip pers can be one or more and the devices for supporting, spreading and closing the links v indefinitely modified while the most meritorious part of our invention is retained. In our construction as described no upward disastrous strain can be brought upon the hanger rods l0, 10, as they will merely slide upwardly in the lugs 12, l2. XVe intend, however, to claim the principle of our invention broadly and to cover by independent subordinate claims such minor mechanical features as we consider desirable. Our apparatus is also susceptible of use with other motive powers than water.

l. The combination of a vertical ingot pusher; a yielding support for the ingot arranged beneath the pusher and means for preventing the mold from accompanying the ingot in its downward descent during the act of ejection.

2. The combination of a power pusher secured to an elevated support; a deprcssible support for the ingot arranged beneath the pusher and means for preventing the mold from accompanying the ingot in its downward descent during the act of ejection.

3. The combination of a vertical ingot pusher; a yielding support for the ingot arranged beneath the pusherand means for supporting the mold during the releasing of the ingot.

4. The combination of a single cylinder which successively frees the ingot and lifts the mold with a yielding support for the ingot.

The combination of a vertical ingot pusher; a depressible platform which supports the ingot and a parallel motion connected to said platform to secure the rise and fall of said platform in a true horizontal plane.

6. The combination of a vertically movable platform centrally supported; bell crank levers pivotally connected to slides on said platform said slides and connections between said bell cranks whereby said platform rises and falls in a true horizontal plane.

7. In ingot pushers, a cylinder having a single rain for ejecting the ingot, and mold lifting devices connected with said ram in its upward movement; whereby a single ram loosens the ingot from the mold and subsequently raises the mold oit from the loosened ingot.

In testimony whereof we have hereunto set our hands this 11th day of February, A. D. 1895.

SAMUEL FORTER. JAMES l-IEMPHILL.

lVitnesses:

WILLIAM BEAL, WM. L. PIERCE.

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